        #camera {
            float: left;
            margin: 20px;
        }
        
        #contentHolder {
            width: 300px;
            height: 300px;
            margin-bottom: 10px;
        }
        
        #btn_snap {
            margin: 0 auto;
            border: 1px solid #f0f0f0;
            background: #5CACEE;
            color: #FFF;
            width: 100px;
            height: 36px;
            line-height: 36px;
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
            cursor: pointer;
            /*禁止选择*/
            -webkit-touch-callout: none;
            /* iOS Safari */
            -webkit-user-select: none;
            /* Chrome/Safari/Opera */
            -khtml-user-select: none;
            /* Konqueror */
            -moz-user-select: none;
            /* Firefox */
            -ms-user-select: none;
            /* Internet Explorer/Edge */
            user-select: none;
            /* Non-prefixed version, currently not supported by any browser */
        }
        
        #imgBoxxx {
            width: 200px;
            margin: 60px 20px 20px;
            /* border-radius: 50%; */
        }